Disk-sharpening machine



sept. 7, 192e.' 1,599,355"

. S. TI ARTHUR DISK SHARENING MACHINE Filed No-v'-, 5, 19,25 2 sheets-sheet 1 Mie/0 sept. 7 i926; 1,599,355

S. T. ARTH UR DISK SHARPENING MACHINE Filed NOV.- 5. 1925 2 Sheets-Sheet 2 O v 46 me/Moz witness www u l Patented Sept. 7, 1.926.

UNITED STATESl PATENT.

SAMUEL T. ARTHUR, or LANE, ILLINois.

FF l@ E nIsK-sHARrENrNG MAoHrivn.

Application led November My invention aims to provide a new and improved machine for sharpening disks of numerous kinds of agricultural machines, provision being made whereby the machine may be adjusted according to the size of the v tion.

, through the disk sharpening means.

In the drawings above briefly described, the numerals 7 designate two spaced, vertically disposed, end frames each of which is preferably formed 'for the mostV part, from a single length of metal bent into substantially arched form, so as to'provide a horizontal crown bar 8 and a pair of legs`9 projecting downwardly therefrom, vsaid legs having feet 10 adapted to be secured by lag screws or the like 11 to a floor 12. The legs are pro-y vided with appropriate braces 13 secured thereto and adapted to be fastened to the floorl in any desired manner. The upper ends of the legs 9 of each end frame are provided with alined openings 14, and the end bars 15 of a rectangular cutterfsupporting frame 16 pass slidably through these o-penings so that said frame 16 may be ytransversely adjusted with respect to the end frames 7. To hold the fra-me 16 in adjusted position, set screws 17 are threaded through the crown bars 8, to contact with the end bars 15 of said fra-me.`

A disk-driving socket or the like18's rotatably supported'by the crown bar of one of the end frames 7, a suitable bearing 19 being provided for that purpose, and any preferred driving means may be employed for the socket or the like 18. In the present showing, a gear 20 is shown on the shaft 21 of the socket, said gear meshing with a pinion 22 on av short shaft 23, this shaft being mounted in a bearing 24 secured to a bar 25 extending between two of the legs 9, as shown in Fig. 3. The Shaft 23 is prolines 3-3, 4-4 and 5--5 o-f Fig. 1.r

vided with a pulley 26 engaged .with a driven belt- 27. Y, y

1 The socket or the like 18 may engage one end of a gang of disks, as `shown in the drawings, and the other end of such gang is supported by an adjustable center screw or `bearing 28 which is threaded through the upper end of a bracket 29, the latter. being adjustable longitudinally upon a bar 30y which extends transversely/f across one end of the frame 16, the ends of said bar. 30

being bent downwardly and inwardly to provide 'guides 31 which slidably engage the parallel side bars of said frame 16. Adjustment of the bracket 24 alongthe bar 30, may

be effectedvby means of a bolt 32 and a plu-` rality'of bolt holes 33 in said bar. vIt will also be seen that the bar 30l may be adjusted longitudinally of theframe 16, andto hold Y it in. adjustedposition, I provide a .rod-34 which may be passed through any of a plu rality of openings 35 the side bars ofthe frame 16.

A bracket 36 is bar of the frame 16 and maybe clamped applicableA to i either side thereto vby a set screw 37. A'hand lever 38 is fulcrumed.y at 39 to the upper end of this bracket, said lever being provided at one end with a disk sharpening cutter 40.` A disk? engaging roller 41 serves to hold the cutter against the disk, said roller'being carried by a lever 42 which is fulcrumed to a lateral `arm 43 projecting from the lever 38, said lever 42 having an appropriate guide 44 carried by said lever 38. A bolt 4.5is con nected to lever 42'and passes through an opening in the lever 38,.a suitable handled nut 46 being threaded on said bolt. By tightening this nut, the roller 41 and cutter 40 may kbe moved into operative relation with a disk to be sharpened. When the nut 46 is loosened, a coil spring 47 surrounding the bolt 45, swings the lever 42 away from the cutterV 40 to permit the sharpening meins to be disengaged from the sharpened dis a By loosening the setscrews 17 and transversely adjusting the frame 16, andby making any necessary adjustment of the bracket 29 along the bar 30, the machine may be set for sharpening disks of any size. Moreover, itA willl be seen that the sharpening means may be used upon one side of the frame 16 for sharpening right hand disks and upon theother side of Asaid frameA for sharpening left hand disks., -It is also to-beV observed that the bearing 28 may be adjusted toward or from the disk-driving member 18, according to the length of the gang of disks or the disk-Carrying shaft, and it may be explained that the machine is not restricted to sharpening disks in which a great number are located in a gang, but may be used to equal advantage for sharpening lesser numbers. After any disk has been sharpened, the bracket 36 is loosened and adjusted along the frame l5, until the sharpening means can properly engage the neXtdisk, and it will be obvious that the sharpening operation may be quickly and easily performed.

As excellent. results are obtainable from the details disclosed, they are preferably followed. However, within vthe scope of the invention as Claimed, variations may be made.

I claim:-

l. In a disksharpen'ing machine, a pair ot' spaced rigidly supported endl frames, a cutter-carrying 'trame extending horizontal- "ly `Jfrom one :end frame to the other and vhaving a transversely adjustable disk-supporting bearing near one of said end trames, a diskdriving member mounted on the other of said end frames in ariall alinement with said bearing, means 'supporting the cuttercarrying frame on the end frames 'for adjustment transversely of Vthe axial line o't said bearing and said .disk-driving member, and 'means for holding said vcutter-carryin frame in adjusted position.V

2. In a disk sharpening machine, an elongated cutter-carrying frame having parallel end bars, a pair o'f spaced rigidly supported end frames having guides in which said end bars are slidably received to permit 'transverse adjustment of the cutter-carrying Viti-ame with regard to the end frames-means for holding said cutter-carrying frame in adjusted position, `a disk-driving member mounted on one of said end trames, and a transversely adjustable disk-supporting bearing mounted on said cutter-carrying rtrame. s

3. In a disk sharpening machine, a pair of spaced end frames having parallel crown bars and legs at the ends of said crown bars, the legs of each frame having alined openings, a horizontal cutter-carrying frame having end bars passing slidably through said openings to support said cutter-carrying frame for transverse adjustment, set screws threaded through said crown bars for engagement with said end bars ot the cuttercarrying frame to hold the latter in adjusted position, a disk-driving member mounted on one of said crown bars, and a disk-supporting bearing mountedv 'on said cuttercarrying liframe for adjustment transversely thereof.

4. A disk grinding machine embodying a 'horizontal cutter-carrying frame having parallel side bars, disk-driving means at one end of said trame, a disk-supporting bearin g near the other end of the frame, a `bracket carrying said bearing, a bar supporting said bracket and extending .transversely across the frame, the ends of said bar bein-g bent downwardly and inwardly to provide guides which slidably engage the side vbars ot' the frame.

V5. A vdisk sharpening 'means comprising a support, a hand lever vfulcianned between its Yends on vsaid support and having a cutter Vextending laterallytr'om its front end, an arm projecting laterally from the hand lever in the same direction as the cutter, a second lever 'fulcrumed to said arm and `having a disk-'engaging 'roller 'opposed to said cutter, a guide for the second named lever rigidly carried by said hand lever, and screw-threaded means engaged with the two levers for effecting swinging 'thereotoward and from each other. y

In testimony whereof I have hereunto affli'Xed my signature.

SAMUELv T. ARTHUR. 

